• Hedge funder John Griffin and his wife Amy, who paid $32.25 million for a full-floor apartment at 1030 Fifth Avenue last year, are selling their old apartment in the same building. Now that they've finished renovations on the new spread, the couple has quietly put their 8th-floor apartment on the market with Serena Boardman for $16.5 million. [NYT]
• The townhouse at 11 East 82nd Street that was purchased by Ron Perelman as a home for one of his executives back in 1996 and was later acquired by private investor Keith Gollust, has gone into contract after more than a year and a half on the market. The limestone mansion was most recently priced at $29.5 million. [Cityfile, Sotheby's]
• Tokyo-born filmmaker Keiko Ibi is switching things up at 15 CPW. Back in July, she put her one-bedroom condo on the market for $3.75 million. Now she's partnered with her 7th floor neighbors, Young-oh and Byungwha Yoon, and they've listed their two apartments together for a combined $10.285 million. Corcoran's Carrie Chiang has the listing. [Cityfile, Corcoran]

• Three months after he paid $12 million
for a 49th-floor apartment at One Beacon Court
, Archibald "Archie" Cox, Jr. has unloaded his former apartment in the same building. The former CEO of Morgan Stanley International who was appointed chairman of Barclays Americas in 2008 sold his 33rd-floor condo for $5 million. [Cityfile
]
• Former soap star Linda Dano has put her one-bedroom apartment at 685 West End Avenue on the market. The 1,100-square-foot co-op is listed for $1.675 million. [Real Estalker
, Sotheby's
]